Let me line out a ramform building project and how shape, building method, and building material, is connected to the interference freedom strategy in a floating project.
First step start it small to keep interference on the shorside low due to the “small neighbourhood impact” of the project. As you see me doing here with a modular platform in Cartagena.
Keep it triangular to point a bow against the waves and keep the stern part of the build (where fresh and vulnerable concrete casting is going on) wave impact free.
Once it is big enough put all the construction activity on the platform itself and move it out of the shorezone to a less interference prone part of the bay to sustain a further growth phase.
Once it is really big you can handle the waves of the open ocean with your bow – just like a ship does.
See more about the ramform island: http://concretesubmarine.activeboard.com/t51926036/establishing-a-ramform-floating-base-in-the-high-seas-concre/
The concrete honeycomb structure as building method allows a “continous building up” of the structure, so that there is no “launch date” no “construction phase in a Shipyard”, which are the project points where interference always is most.
The structure grows inperceptible a few squaremeters per day every day for years in a almost “organic way” – just as a settlement, a city, a business, or a living organism.
The building technology is concrete honeycomb and concrete shell construction.
Build it up adding a cell or a small shell every day.
Connect things by rebar overlap, cast joints, pretension, and post tension, just like in land based concrete construcction.

Ellmer, it’s a very simple concept you outlined, except for the part where it must be registered somewhere before it’s put into the water. While the paperwork in the usa, which i have gone thru to have a homemade boat registered, doesn’t say explicitly that the boat cannot be in the water before it’s registered, the state reserves the right to order the boat destroyed if it is found unregistered in the water, and yet they can tell you to put it into the water to prove it will float before it’s registered. Thereafter, the state it’s registered in, and every state waters you pass thru, plus the USCG, can board the boat any time they want for health and safety inspections. It may be a “growing boat”, but if you are clouding the water with cement dust, they can confiscate the boat or penalty fine you more than the boat is worth. I did ask about welding on a boat at sea, they said if grinding dust or used welding rods touched the ocean, i’d be guilty of water pollution.
I haven’t yet asked about experimental classifications, but it’s likely there’s a limit to the number of times you can pass the regs for it being an experiment if it actually succeeded in it’s design goals the first year it was out.
Just the same, i am going to launch an affordable too-small place to live, and grow it as i can.

Hello;
.
It appears to me that a ramform structure is a good idea. The modular building also seems to be
a good idea. For modular building, I can imagine a cinder block type of building method.
With this method a ramform inverted pyramid shape of structure could be built the way that it could
be built larger and larger. A ‘ V ‘ type of three dimensional structure , and the opening of the ‘ V ‘
can be built more and more. The bottom for the ‘ V ‘ would sink into the water more and more, like the
Rion-Antirion pylons
.
A special cinder block, rebar building method could be developed. These parts could be built on shore,
or at sea. The building blocks could be put together to make a small structure. The small structure
could be in protected waters. As the structure expands, it can be moved into less and less protected
waters, and finally, may be, to open oncean.
.
So far, this is how much I could get my thought together, and write them down.
.
Respectfully yours;
.
spark